Download or read book Land Use Effects on Stream Morphology and Macroinvertebrate Communities in the Ozarks Region Taney County Missouri written by David Dickson and published by . This book was released on 2012 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Changing land use practices have contributed substantially to an increase in stream degradation and biotic stresses. Clearing of forested areas, urbanization, and agricultural practices are a direct result of sustaining the ever increasing human population. In the Ozarks of Southwest Missouri, little research has been performed on these impacts on streams outside of the Springfield area, leaving much of this region without an account of such anthropogenic disturbances. To better assess the impacts of anthropogenic disturbances in southwest Missouri, four streams were chosen following the rural-urban disturbance gradient. Geomorphic, habitat, and hydrologic data was collected following the USGS National Water Quality Assessment (NAWQA) protocol with additional survey methods. Water quality was assessed for each stream through nutrient samples, water chemistry, and macroinvertebrate community analysis. Results provide evidence indicating that all streams in this study were considered degraded, both biologically and geomorphically and that anthropogenic influences have altered and affected all streams in this study with little regard to classification type. However, the degree and severity of impairment varied among stream types. Percent shading and water temperature were the only factors significant correlated to land use that also had a high degree of similarity with the macroinvertebrate community indices. This suggests that in impaired stream reaches, shading, and the environmental factors it can influence, can have a substantial impact on the success rate of the macroinvertebrate communities within these streams.
Download or read book Historical Land use Changes and Potential Effects on Stream Disturbance in the Ozark Plateaus Missouri written by Robert B. Jacobson and published by . This book was released on 1997 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Stream Crossings on Macroinvertebrate Assemblages of the Upper Current River Ozark National Scenic Riverways Missouri written by Rachel Lee Sine Heth and published by . This book was released on 2010 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the impact of road crossings on benthic macroinvertebrate communities in a wadeable Ozark river. I collected macroinvertebrates during winter and summer from four riffle locations (upstream, at crossing, downstream, and farther downstream) at each of five sites in the upper Current River (mean discharge 12 m3 s-1). Sixteen environmental variables were measured at each location to characterize sites. Using digital photographs from trail cameras, traffic frequencies were calculated and largely consisted of hikers and horses. Based on counts of 68,353 individuals from 111 macroinvertebrate taxa, I calculated four metrics (taxa richness, Shannon's index, EPT, biotic index) combined into the Stream Condition Index and assessed effects of stream crossings with a two-way nested ANOVA for each season. All metrics showed strong differences among sites but inconsistent effects among locations. Multivariate analyses (NMDS and a nested ANOSIM) also revealed strong differences in community composition among sites, as well as among locations. Taken together, the results indicate crossing disturbances during summer and winter 2009 were either too infrequent or small in intensity to impair benthic macroinvertebrate communities.
Download or read book Historical Land use Changes and Potential Effects on Stream Disturbance in the Ozark Plateaus Missouri written by Robert B. Jacobson and published by . This book was released on 1997 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Stream Habitat and Land Use on Benthic Macroinvertebrate Indicators of Stream Quality of Selected Above tidal Streams in the Houston Galveston Area Council Service Area Texas 1997 98 written by James Bruce Moring and published by . This book was released on 2001 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Stream Channelization on Aquatic Macroinvertebrates Buena Vista Marsh Portage County Wisconsin written by Robert N. Schmal and published by . This book was released on 1978 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Macroinvertebrate Communities in Headwater Prairie Streams written by Brandy Sue Bergthold and published by . This book was released on 2001 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Quality Land Use Acidification written by and published by . This book was released on 1996 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long term Trends of Stream Fish Community Assemblages in Southern Missouri with Contemporary Land Use Impacts written by Stephanie Marie Sickler and published by . This book was released on 2018 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stream fish communities in the Ozarks are structured via a number of different mechanisms, including basin, stream size, and human land use. The purpose of this study was to understand the structuring mechanisms of stream fish communities in southern Missouri. I compiled 48 years of historical fish collections performed by the Ichthyology class at Missouri State University consisting of 140 sites. I resampled 45 of these sites in summer of 2016. First, I tested whether communities are different between basins and stream size. Next, I tested associations of land use at three spatial scales to local fish communities. Last, I used historical collections to determine occupancy of species through time. Contemporary fish communities were used to answer basin, stream size, and land use structuring questions. Bray-Curtis dissimilarities demonstrated that communities in the modern data were different between basin, but not different in relation to stream size. I used Bray-Curtis again to calculate dissimilarity of land use composition at each spatial scale, then compared that to the communities with Mantel tests. Mantel tests showed that differences in land use were associated with differences in fish communities at all three spatial scales. Historical data were used to create logistic regressions for occupancy of each species to determine if presence is increasing or decreasing. Logistic regressions showed many species in decline, especially darters and minnows. This points to a need to more fully understand how fish communities in the Ozarks are impacted by human activities.
Download or read book Historical Land Use Influence on Fine grained Sedimentation in Channel and Floodplain Deposits in a Forested Missouri Ozark Watershed written by Katy Nicole Reminga and published by . This book was released on 2019 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrologic disturbances due to land use and climate effects can disrupt river form and increase sediment transport. Ozark streams have been experiencing the effects of accelerated channel erosion on coarse sediment delivery and gravel bar deposition since the onset of early European settlement in the late 1800’s. Little attention has focused on understanding the fate of fine-grained sediment released by upland soil and headwater channel erosion and the potential for storage as legacy deposits on floodplains. Legacy deposits are attributed to human disturbances as the result of land clearing and agriculture that increase runoff, soil erosion, flooding, and sediment supply in watersheds. Big Barren Creek (BBC) watershed (191 km2) drains the Salem Plateau in the Ozark Highlands in south eastern Missouri. The watershed was heavily logged between 1880 and 1920 and stream channelization practices on farmland in the area began as early as 1950. Today about 3⁄4 of the watershed area is within the Mark Twain National Forest. This study assesses the occurrence of fine-grained alluvial deposits along BBC and its tributaries and characterizes the spatial distribution and history of legacy sedimentation on alluvial landforms. There were four conclusions: (i) Fine-grained legacy deposits occur in BBC and are distributed non-uniformly upon channel, floodplains, and terrace landforms; (ii) Rates of post-settlement deposition from 1890-1950 were highest in upper BBC (~0.45 cm/yr) where the effects of historical timber harvest were most prevalent and decreased downstream to 0.29 cm/yr in middle BBC; (iii) Rates of post-1950 sedimentation were highest in lower BBC (~0.80 cm/yr) due to increased sediment supply from upstream head-cutting, channelization, and lateral bank erosion in disturbance zones; and (iv) In response to human-induced watershed disturbance, BBC has generally undergone a transition from a multi-threaded channel to a single channel form over the past century.
Download or read book The Variability of Stream Macroinvertebrates and the Effects of Land Use Activities written by Deborah C. Gregg and published by . This book was released on 1995 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Historical Land Use Changes and Potential Effects on Stream Disturbance in the Ozark Plateaus Missouri R B Jacobson Et Al written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Land Use on Stream Nutrient Levels written by James M. Omernik and published by . This book was released on 1976 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impacts of Land Use on Stream Bank Erosion in the Northeast Missouri Claypan Region written by Rachel Dabney Peacher and published by . This book was released on 2011 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fish and Wildlife Implications of Upper Missouri Basin Water Allocation written by William B. Lord and published by . This book was released on 1975 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Watershed Land Use on the Benthic Macroinvertebrate Assemblages in Ridge and Valley Streams in Chattanooga Tennessee written by Paul Leiper Freeman and published by . This book was released on 1999 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Nonpoint source Pollutants in the Missouri Basin Region written by A. D. McElroy and published by . This book was released on 1975 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
